Supersprint BMW F10 5 Series & F11 5 Series Stainless Steel Sleeve Connecting Pipe Kit for OEM Centre Muffler M135i (F20 & F21)(P) These springs are part of

These springs are part of a comprehensive range developed for over 2500 vehicle models dating back to 1966

Engineered specifically for the S58 platform

Average friction coefficient of 0

Developed with tens of thousands of dyno

K&N air filters are the perfect choice for BMW enthusiasts looking to enhance their driving experience whilst maintaining the standard intake system

Supersprint BMW F10 5 Series & F11 5 Series Stainless Steel Sleeve Connecting Pipe Kit for OEM Centre Muffler M135i (F20 & F21)(P) These springs are part ofThe Supersprint Sleeve Connecting Pipe Kit for OEM Centre Muffler is a precision, direct fit stainless steel upgrade engineered for the BMW F10 5 Series & F11 5 Series. It replaces the restrictive factory component to free up exhaust flow, sharpen throttle response and give your BMW a deeper, more purposeful note. Supersprint has been handcrafting performance exhausts in Mantova, Italy since 1955. Every system is designed and validated on the dyno not